Film holder



Oct. 27, 1942. s, wo 2,299,779

FILM HOLDER I Filed Jan. 27, 1940 INVENTOR fz' mr 5. M 0U"- B ATTORNEYPatented Oct. 27, 1942 UNITED STATES e ress orrics 4 Claims.

This invention relates generally to film holders. More particularly, myinvention relates to an improved construction for film holders of thetype adapted to support photographic films during the handling thereoffor the purpose of developing and drying.

One of the objects of my invention is to provide an improvedphotographic film holder of the type disclosed in my Patent No.1,932,946, issued October 31, 1933, for Film holder, and which shallpossess certain additional structural advantages and improvementsresulting from experimentation and a period of actual use.

Other objects of this invention will in part be obvious and in parthereinafter pointed out.

The invention accordingly consists in the fea tures of construction,combinations of elements, and arrangement of parts which will beexemplified in the construction hereinafter described, and of which thescope of application will be inmcated in the claims.

In the accompanying drawing, in which is shown one of the variouspossible embodiments of this invention,

Fig. 1 is an elevational View of a film holder embodying my inventionand illustrating the manner of supporting a film thereby;

Fig. 2 is a cross-sectional view taken substantially on the line 2-2 ofFig. 1;

Fig. 3 is an enlarged cross-sectional view taken substantially on theline 33 of Fig. 1;

Fig. 4 is an enlarged cross-sectional view taken substantially on theline 44 of Fig. 1; and

Fig. 5 is a cross-sectional view taken substantially on the line 55 ofFig. 4.

Referring now in detail to the drawing, there is illustrated aphotographic film holder constructed in accordance with my invention,and which is of the type shown in my said Patent No. 1,932,946,comprising a longitudinal cross member I6 and a U-shaped frame memberhaving parallel arms I I and a bottom interconnecting member I2. Thesaid cross member I and U-shaped member Ii, I2 are preferably made ofmetallic material, the former being substantially rectangular in crosssection and the latter being preferably circular in cross-sectionalcontour. The arms Ii of the U-shaped frame are provided with reducedupper end portions I la, which pass through corresponding apertures inthe member III and are riveted over and to hold the same rigidly inassembled relationship.

For supporting a film F on the holder, there is provided a pair ofsymmetrically disposed spaced resilient members I5, which are preferablymade from a single piece of flat metallic stock. Each of the saidmembers I comprises a horizontal portion I5a contactively overlying thebottom surface of the cross member ID, an integral depending portion I5band a second horizontal portion I50, the latter portion being twisted tolie a plane at right angles to the plane of the first horizontal portionlid. Each of tle members 5 is rigidly attached to the cross member it bymeans of a plate i6 overlying the portion and permanently attached tothe said cross member ill by means of the pairs of rivets 51 passingthrough the portion I5a, the plate l6 and the cross member If). Thematerial of the members I5, while relatively rigid, possesses asufficient amount of resilience so that they may be moved from theirnormal dotted line position I5 to the full line position. In otherwords, with the portion I5d of the members I5 as a fulcrum, the integralportions Ito and IE-c may be pivotally moved from the dotted lineposition 5 to the full line position and, upon release, will be againrestored to the said dotted line position.

Attached to the twisted portions lEc of the members I 5 are clip members28 adapted to firmly grip the film F adjacent the upper edge thereof.The clips 26 may be of the type fully shown and described in my saidPatent No. 1,932,946, and may comprise a sheet metal member 2i having apair of parallel upstanding ears 22 provided with aligned bearingopenings. The member 2! is provided with an opening 23 adjacent thebottom end thereof, designed to receive therein a projection 24 of asecond sheet metal member 25. The said member 25 is provided with a pairof parallel ears 26 having aligned bearing openings. The aligned bearingopening in the ears 26 and in the ears 22 receive therein a pivot 21 tothus hold the members 2| and 25 in pivotally a., sembled relationship. Aspring 28 normally tends to urge the lower end of the members 25 and 2!toward each other in a position such as shown in Figs. 4 and 5 of thedrawing, where the projection 2 5 is received in the opening 23. Themember 2: is provided with a flared upper portion Zia, which liesadjacent the underneath surface of the twisted portion I50. A plate 29overlying the opposite surface of the said portion Idc serves topermanently attach the cips 23 to the said members its by means of therivets 29. It is thus seen that the clips 2!? are permanently andrigidly attached to the members it: for movement therewith, and themembers 2I of the clips 25 are prevented from movement relatively to themembers I5.

The film F is adapted to be tightly gripped by the clip members 29 bypositioning the same between the spread apart members it and 25 of theclips 25?, which, upon release, will cause the projection 2 to piercethe film F and thus hold said film tightly gripped adjacent the upperedge thereof.

A pair of clips 35, similar in construction to the clips 29, having thefiared flattened ends thereof rigidly attached to portions 36 of thebottom frame member I 2, which portions 36 are flattened to correspondto the said portions Zia, are provided. The clip members are thenpermanently and rigidly attached to the frame part 52, by means of therivets 3.1.

In attaching a film to'the holder, the bottom edge of the film may firstbe gripped by the clip members 35, after which the clip members 28 arebrought down from their normal dotted line position IE to the full lineposition shown in Fig. 1, where they grip the upper edge of the film andproduce a tension on the film by their tendency to be restored to theiroriginal dotted line position, thus keeping the film in a flatunwrinkled condition.

It is thus seen from the above described construction that when the filmF is tightly gripped by the upper and lower pairs of clip members 28 and35 respectively, it will be held against movement in all directions,since it is noted that, due to the fiat rod-like construction of themembers l5, lateral displacement will be prevented, so that the film Fwill maintain its position in the same plane and will therefore notcontactively engage other films or other undesirable objects.

The cross member H1 is preferably made of such size as to projectconsiderably beyond one of the arms H, to provide a portion forconvenient handling. To further insure against disalignment of themembers E5, the portions i517 thereof are provided with longitudinalribs at). I the present invention, I have found that satisfactoryresults are obtained when the ribs 0 are formed by pressing out thematerial from the opposite sides of said ribs. is added to the clipmembers by providing the member 2| thereof with a rearwardly pressed outrib 39.

It will thus be seen that there is provided a device in which theseveral objects of this invention are achieved, and which is welladapted to meet the conditions of practical use.

As Various possible embodiments might be made of the above invention,and as various changes might be made in the embodiments above set forth,it is to be understood that all matter herein set forth or shown in theaccompanying drawing is to be interpreted as illustrative and not in alimiting sense.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. In a film holder having a frame and wherein a clip movably mountedwith respect to said frame and having a pair of jaws is employed forgripping portions adjacent one edge of a film between said jaws, thatimprovement which comprises the provision of a clip support having oneend attached to said frame and the other end attached to said clip, saidclip support including a resilient member of flat bar stock having apair of substantially horizontally disposed end portions interconnectedby a transversely disposed central portion, the end portion of saidstock attached to said frame and the central transverse portion havingtheir flat sides perpenicular to the plane of said frame, the endportion of said stock attached to said clip being axially twisted sothat its flat side is parallel to the plane of said frame and disposedsubstantially at right angles to the fiat side of the central portionand the end portion which is attached to said frame.

2. In a film holder having a frame and where- I have also found thatrigidity in a clip movably mounted with respect to said frame and havinga pair of jaws is employed for gripping portions adjacent one edge of afilm between said jaws, that improvement which comprises the provisionof a clip support having one end attached to said fram and the other endattached to said clip, said clip support including a resilient member offiat bar stock having a pair of substantially horizontally disposed endportions interconnected by a transversely disposed central portion, theend portion of said stock attached to said frame and the centraltransverse portion having their fiat sides perpendicular to the plane ofsaid frame, the points of attach- :1 ment between said frame and an endportion of said stock and between said clip and the other end portion ofsaid stock being disposed adjacent opposite ends of said transversecentral portion.

3. In a film holder having a frame and wherein a clip movably mountedwith respect to said frame and having a pair of jaws is employed forgripping portions adjacent one edge of a film between said jaws, thatimprovement which comprises the provision of a clip support having oneend attached to said frame and the other end attached to said clip, saidclip support including a resilient member of flat bar stock having apair of substantially horizontally disposed end portions interconnectedby a transversely disposed central portion, the end portion of saidstock attached to said frame and the central transverse portion havingtheir fiat sides perpendicular to the plane of said frame, the endportion of said stock attached to said clip being axially twisted sothat its flat side is parallel to the plane of said frame and disposedsubstantially at right angles to the flat side of the central portionand the end portion which is attached to said frame, the points ofattachment between said frame and an end portion of said stock andbetween said clip and the other end portion of said stock being disposedadjacent opposite ends of said transverse central portion.

4. In a film holder having a frame and wherein a clip movably mountedwith respect to said frame and having a pair of jaws is employed forgripping portions adjacent one edge of a film between said jaws, thatimprovement which comprises the provision of a clip support having oneend attached to said frame and the other end attached to said clip, saidclip support including a resilient member of fiat bar stock having apair of substantially horizontally disposed end portions interconnectedby a transversely disposed central portion, the end portion of saidstock attached to said frame and the central transverse portion havingtheir flat sides perpendicular to the plane of said frame, the endportion of said stock attached to said clip being axially twisted sothat its flat side is parallel to the plane of said frame and disposedsubstantially at right angles to the flat side of the central portionand the end portion which is attached to said frame, the axially twistedpart of the end portion to which said clip is attached being disposedimmediately adjacent an end of said central transverse portion, thepoints of attachment between said frame and an end portion of said stockand between said clip and the other end portion of said stock beingdisposed adjacent opposite ends of said transverse central portion.

HARRY S. WOLF.

